CN102996131A - Solid-filling coal mining method with two pre-excavating tunnels for advancing - Google Patents

Solid-filling coal mining method with two pre-excavating tunnels for advancing Download PDF

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Publication number
CN102996131A
CN102996131A CN2012105270332A CN201210527033A CN102996131A CN 102996131 A CN102996131 A CN 102996131A CN 2012105270332 A CN2012105270332 A CN 2012105270332A CN 201210527033 A CN201210527033 A CN 201210527033A CN 102996131 A CN102996131 A CN 102996131A
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coal
filling
lane
mining
coal mining
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CN102996131B (en
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张吉雄
张强
邓雪杰
周楠
姜海强
汪贺
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China University of Mining and Technology CUMT
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China University of Mining and Technology CUMT
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Priority to PCT/CN2013/088632 priority patent/WO2014090108A1/en
Priority to AU2013358812A priority patent/AU2013358812B2/en
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C41/00—Methods of underground or surface mining; Layouts therefor
    • E21C41/16—Methods of underground mining; Layouts therefor
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
    • E21D23/0481—Supports specially adapted for use in combination with the placing of filling-up materials

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Remote Sensing (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

The invention discloses a solid-filling coal mining method with two pre-excavating tunnels for advancing. A mining roadway adopts an arrangement mode that the pre-excavating tunnels are taken as air return and inlet roadways and a gob-side entry retaining roadway is taken as a roadway for transporting filling materials and coal; coal extraction and gob backfilling are carried out by a comprehensive mechanical solid-filling coal mining process; and according to the coal mining method, a mining sequence is propelled by making a filling coal mining work surface be back to the direction for transporting the coal to a mountain in a mining area. The pre-excavating tunnels are formed before the extraction of the work surface by tunneling, and the gob-side entry retaining roadway is formed by optimally designed filling bodies beside the roadway along with the implementation of advancing filling coal mining operation along the work surface. The coal mining method is simple in process and technically and completely realizes coal milling without pillars, and the resource extraction rate of the coal is high. The coal mining method can not only solve the technical problems that a draw-back-type down-mining and up-filling work surface cannot ensure a filling effect during a filling milling process of a mine with shortage of resources, but also materialize the comprehensive mechanical solid-filling coal mining of mines with limited geological conditions by virtue of an advancing up-milling and down-filling work surface.

Description

A kind of pre-pick two lane protrusive solid filling coal-mining methods
Technical field
The present invention relates to a kind of pre-pick two lane protrusive solid filling coal-mining methods in colliery, be particularly useful for the comprehensive mechanization solid filling exploit nearly horizontal medium-thickness seam without coal column gob side entry retaining work plane.
Background technology
Comprehensive mechanization solid material filling coal mining technology is a revolutionary technology of filling mining technology, this technology is since its research and development, in China table mountain (under the village), Jining (under the close villages group), Yanzhou (under the large-scale river levee), Wan Bei (under four water contents), open more than 20 work plane in more than 10 mining area such as Luan (under the railway network) and carry out widely industrialness and promote, this technology is improving coal recovery rate; Utilize mining area solid material and the aspects such as protection mining area building, soil, water body and ecological environment to have outstanding technical advantage, become the one preferred technique that coal and other dull coal resources are pressed in liberation " three times ".Because this technology is to control the movement of Overlying Strata In A Face by solid material sold stowing goaf, thereby control ore deposit pressure manifests and subsidence, so goaf sold stowing effect is the key of this technology successful implementation.But because the restriction of solid filling coal excavation apparatus and the technique of filling technique own, filling technique has certain limitation to the change of pitch angle compliance in coal seam, and require the solid filling coal-face to face upward as far as possible that adopting bows to fill (to face upward oblique coal mining, the oblique filling of bowing) arranges, so under specific geological conditions, use filling technique and run into challenge.Generally, the fully-mechanized coalface retrusive is arranged, the direction of (or ginney) of going up a hill along section boundaries to transportation advances, seam inclination changes greatly but if this walks upwards, namely needing bows adopts to face upward and fill and (bows and tiltedly mine, face upward oblique filling) when arranging the filling coal mining work plane, the effect of filling technique then can't guarantee.
Summary of the invention
Technical problem: the objective of the invention is for the weak point in the prior art, a kind of simple to operate, coal recovery rate is high and filling effect is easy to control pre-pick two lane protrusive solid filling coal-mining methods are provided.
Technical scheme: pre-pick two lane protrusive solid filling coal-mining methods of the present invention comprise the steps:
A. from the fortune coal otch of going up a hill out, and in coal body, form pre-pick transportation lane from going up a hill to section boundaries direction driving;
B. open otch from ginney, and in coal body, tunnel formation from going up a hill to the section boundaries direction and dig in advance the track lane;
C. from pre-pick transportation lane or dig in advance the track lane and open otch, form connection roadway, connect pre-pick transportation lane and pre-pick track lane;
D. reserve the protection coal column, self-shield coal column boundary open-off cut, and arrange the work plane filling coal mining equipment that is consisted of by coal-winning machine, drag conveyor, filling coal mining hydraulic support, porous bottom-dump conveyer, lift platform cutting intraocular;
E. transport the lane in pre-pick and arrange coal excavation apparatus in the lane that is consisted of by crushing engine, fortune coal elevating conveyor, fortune ribbing formula conveyer;
F. in pre-pick track lane, arrange stowage unit in the lane that is consisted of by automatic moving type redoiming conveyor, fortune cash ribbon conveyer;
G. from going up a hill to section boundaries direction protrusive propelling filling coal mining work plane, implement a step pitch coal mining, packing job,
H. along with the coal mining packing job of work plane, in pre-pick transportation lane and pre-pick track lane, construct the roadside packing body, finish a step pitch gob-side entry retaining work;
I. repeating step g, h continue the progressive cycle operation of coal mining, filling, gob side entry retaining of next step pitch, until finish coal mining, filling, the gob-side entry retaining work of a work plane.
Beneficial effect: the present invention efficiently solves the resource scarcity mine and implements in the filling mining process retrusive and arrange to bow to adopt to face upward and fill the technical barrier that work plane can't ensure filling effect; Adopt two lanes edge air gallery technology, realized fully without coal pillar mining, improved coal recovery rate; Arrange by protrusive and to face upward that adopting bows fills work plane, make the mine that is subjected to the geological conditions restriction implement the exploitation of comprehensive mechanization solid filling and become a reality.The present invention is owing to adopt the solid material bashing, effectively limited the scope of activities of Overlying Strata In A Face, effectively control the ore deposit pressure and manifested and subsidence, ensured the safe handling of ground construction of structures, shown out unique technical advantage especially aspect liberation " three times " the pressure coal.
Description of drawings
Fig. 1 is technological process state diagram I of the present invention;
Fig. 2 is technological process state diagram II of the present invention;
Fig. 3 is work plane arrangement diagram of the present invention.
Among the figure: the 1-transportation is gone up a hill, and 2-ginney, 3-are dug the transportation lane in advance; 4-digs the track lane in advance, and 5-stays transportation lane, lane, and 6-stays track lane, lane; 7-cuts eye, and 8-protects coal column, 9-roadside packing body; 10-goaf filling body, 11-porous bottom-dump conveyer, 12-fortune ribbing formula conveyer; 13-fortune cash ribbon conveyer, 14-filling coal mining hydraulic support, 15-automatic moving type redoiming conveyor; the 16-coal-winning machine; the 17-reinforcement mechanism, 18-front scraper conveyor, 19-discharge port; back timber behind the 20-filling coal mining hydraulic support; the 21-connection roadway, 22-protection coal column border, 23-lift platform; the 24-crushing engine, 25-fortune coal redoiming conveyor.
The specific embodiment
Below in conjunction with accompanying drawing enforcement of the present invention is further described:
Pre-pick two lane protrusive solid filling coal-mining methods of the present invention: at first go up a hill from the fortune coal and 1 open otch, and in coal body, tunnel to form pre-pick transportation lane 3 from going up a hill to the section boundaries direction; Open otch from ginney 2, and in coal body, tunnel formation from going up a hill to the section boundaries direction and dig in advance track lane 4; When two dig tunnellings in advance to section boundaries, stop driving; Then from pre-pick transportation lane 3 or dig in advance track lane 4 and open otch, form connection roadway 21, to connect pre-pick transportation lane 3 and pre-pick track lane 4; Pre-pick transportation lane 3 air intakes are dug track lane 4 return air, in advance to form initial ventilation system;
Reserve protection coal column 8, the protection coal column border 22 place's open-off cuts 7 of certainly going up a hill connect pre-pick transportation lane 3 and pre-pick track lane 4 equally, form the ventilation system of filling coal mining work plane; And cutting eye 7 interior layout coal-winning machines 16, drag conveyor 18, filling coal mining hydraulic support 14, porous bottom-dump conveyer 11, the crucial filling coal mining equipment of lift platform 23 work planes; Crucial coal excavation apparatus in pre-pick transportation lane 3 interior layout crushing engines 24, fortune coal elevating conveyor 25, fortune formula conveyer 12 lanes, ribbing; In pre-pick track lane 4, arrange crucial stowage unit in automatic moving type redoiming conveyor 15, fortune cash ribbon conveyer 13 lanes; After equipment installed, the beginning protrusive advanced the filling coal mining work plane, implements coal mining, filling, the progressive cycle operation of gob side entry retaining, finished to face upward that adopting bows fills technological process;
The concrete steps of coal mining, filling, the progressive cycle operation of gob side entry retaining: according to regular circulation, at first start coal-winning machine 16, carry out normal drilling depth (cutting dark 0.6m) coal cutting, then move forward successively filling coal mining hydraulic support 14, drag conveyor 18 and stay haulage device in the lane transportation lane 5 are finished the coal mining operation; Then start successively and be suspended on behind the filling coal mining hydraulic support porous bottom-dump conveyer 11, self-moving reversed loader 15, the fortune cash ribbon conveyer 13 under the back timber 20 and stay the haulage devices in the track lane, lane 6 to carry out the conveying of solid material (spoil, flyash etc.); Start the reinforcement mechanism 17 on the filling coal mining hydraulic support 14, the solid material that porous bottom-dump discharging of conveyor mouth 19 is unloaded is tamped and is connect the top, finishes the filling procedure of goaf filling body 10; Along with the coal mining packing job of work plane, in two lanes, construct roadside packing body 9 by manually assembling the forms such as spoil bag or concreting, form respectively new staying transportation lane, lane 5 and stay track lane, lane 6, to finish the gob side entry retaining operation in this step pitch; And then repeat successively the step of above coal mining operation, filling procedure and gob side entry retaining operation in the next step pitch, finish coal mining, filling, the progressive cycle operation of gob side entry retaining with circulation; The filling coal mining work plane faces upward constantly that adopting bows fills, and protrusive is advanced into section boundaries, finishes the coal actual mining of this section, then takes over to next work plane.

Claims (1)

1. pre-pick two lane protrusive solid filling coal-mining methods is characterized in that comprising the steps:
A. from the fortune coal go up a hill (1) open otch, and in coal body, form pre-pick transportation lane (3) from going up a hill to section boundaries direction driving;
B. open otch from ginney (2), and in coal body, tunnel formation from going up a hill to the section boundaries direction and dig in advance track lane (4);
C. from pre-pick transportation lane (3) or dig in advance track lane (4) and open otch, form connection roadway (21), connect pre-pick transportation lane (3) and pre-pick track lane (4);
D. reserve protection coal column (8), open-off cut (7) is located on self-shield coal column border (22), and arranges the work plane filling coal mining equipment that is made of coal-winning machine (16), drag conveyor (18), filling coal mining hydraulic support (14), porous bottom-dump conveyer (11), lift platform (23) in cutting eye (7);
E. transport lane (3) in pre-pick and arrange coal excavation apparatus in the lane that is consisted of by crushing engine (24), fortune coal elevating conveyor (25), fortune ribbing formula conveyer (12);
F. in pre-pick track lane (4), arrange stowage unit in the lane that is consisted of by automatic moving type redoiming conveyor (15), fortune cash ribbon conveyer (13);
G. from going up a hill to section boundaries direction protrusive propelling filling coal mining work plane, implement a step pitch coal mining, packing job,
H. along with the coal mining packing job of work plane, in pre-pick transportation lane (3) and pre-pick track lane (4), construct roadside packing body (9), finish a step pitch gob-side entry retaining work;
I. repeating step g, h continue the progressive cycle operation of coal mining, filling, gob side entry retaining of next step pitch, until finish coal mining, filling, the gob-side entry retaining work of a work plane.
CN201210527033.2A 2012-12-10 2012-12-10 Solid-filling coal mining method with two pre-excavating tunnels for advancing Active CN102996131B (en)

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PCT/CN2013/088632 WO2014090108A1 (en) 2012-12-10 2013-12-05 Solid-filling coal mining method with two pre-excavated tunnels for advancing
AU2013358812A AU2013358812B2 (en) 2012-12-10 2013-12-05 Solid-filling coal mining method with two pre-excavated tunnels for advancing

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